public void SignUpAndLoginTest()
        {
            // app.Repl();
            string username = Utills.ReadTestData("validCredentials", "userName");
            string password = Utills.ReadTestData("validCredentials", "password");

            //  ReportUtill.extentTest.Log(Status.Info, "Given I Launch the App and Navigate to Sigup Screen");
            LoginScreen  loginScreen  = new LoginScreen(app, platform);
            SignUpScreen signUpScreen = loginScreen.TapSignUpButton();

            //  ReportUtill.extentTest.Log(Status.Info, "And  I Sign Up for a new account");
            signUpScreen.PerformSignUp(username, password);
            //  ReportUtill.extentTest.Log(Status.Info, "When  I login to the App");
            FirstPageScreen firstPageScreen = loginScreen.PerformLogin(username, password);

            //  ReportUtill.extentTest.Log(Status.Info, "Then   I confirm ,successful login");
            Assert.IsTrue(firstPageScreen.QueryGoButton().Any(), "Not loged in.");
        }